Thermodynamic study onthesolubility of Ca and Al in CaO-SiO2-Al2O3 slag system

Eun Jin Jung, Sang Hoon Lee, Wan Ho Kim, Dong Jun Min

Research output: Contribution to journalArticlepeer-review


Thermodynamic study on CaO-SiO2-Al2O3 slag system was carried out to understand the refining ability of Ca and Al in ferrosilicon. The effect of slag composition and oxygen partial pressure on refining ability of slag was also thermodynamically evaluated. Experimental results indicated that equilibrium concentrations of Ca and Al are both decreased with increasing SiO2 activity of slag and oxygen partial pressure. Also, the effect of activity coefficients of Ca and Al in molten alloy was not significant, while activities of each component in slag were important determining factors. Refining ability of Ca and Al of CaO-SiO2-Al2O3 slag from ferrosilicon is possibly increased by controlling interfacial oxygen partial pressure and activities of components of slags.

Original languageEnglish
Pages (from-to)352-358
Number of pages7
JournalJournal of Korean Institute of Metals and Materials
Issue number5
Publication statusPublished - 2015

Bibliographical note

Publisher Copyright:
Copyright © The Korean Institute of Metals and Materials.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys


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